I recently had a nagware popup telling me that my phone has already downloaded the 1.1 GB update, with only one option when clicked: "Restart and install"; once a day after midnight, it seems, the notification goes from a background notification to a foreground notification, and it's not until I enter this "restart and install" screen and hit the back button that the notification gets a "Later / Install" option to turn it back into a background notification.
I don't know why LG is pulling this Microsoft Windows 10 nonsense on me, but I certainly wouldn't want to do anything to increase their incentive to do so, so I'd be pretty disappointed with any incentives for OEMs based on "actual adoption" rather than "availability of update".